View a comprehensive list of all postcodes in the United Kingdom at Doogal. The website also marks the areas covered by the postcodes on an interactive map.
To view all postcodes belonging to a postcode area, click on an area on the list below the map. The area postcode lists include both active and inactive postcodes. Click the last column twice to prioritize active post codes.
Doogal also offers downloadable lists in CSV format. The website warns that Excel is not able to display all UK postcodes at once. As such, it suggests that the users download the CSV files of each area and open them separately. Alternatively, users can install the PoverPivot addon for Excel to display all postcodes at once. However, the addon is only available for Excel 2010.